#!/usr/bin/env python3

a = input("请输入: ")

b = int(a)

print("type(a) = " , type(a))
print("type(b) = " , type(b))

print("hello a = " + str(a))

#  print("a = " + a + ", b = " + str(b))
print("a = ", a, ", b = ", b, sep='')
print(a, b, sep='', end='')
print("hello world")
